Method and device for machining a teat rubber during production
OwnerWilfried Hatzack, Jakob Maierinventors
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Abstract
During the production of teat rubbers, in particular of teat rubbers containing a high percentage of silicone, pressure is applied when the teat rubber preforms are removed, the radial expansion of teat rubber areas being appropriately limited to a maximum value. Hence, the removal can be executed automatically and at a comparatively high temperature without irreversible damage being caused to the material. The removal process can be supported by an appropriate contact surface whose contour corresponds, at least partially, to the outer contour of the preform. Furthermore, an appropriate removal device is provided.
Claims39
A method of producing a teat rubber with a head area and an adjoining tubular area, said method comprising
- forming a preform of the teat rubber from a heated polymer material mixture by means of a mould and
- removing the preform from a mould element, which determines, at least partially, the inner contour of the teat rubber, by introducing pressurized fluid into the tubular area and by simultaneously limiting a radial expansion of the tubular area, caused by the fluid pressure, to a predetermined range.
A device for removing a teat rubber preform, which comprises a head area and a tubular area and which is placed, at least partially, on an element determining the inner contour of the teat rubber, said device comprising:
- a removal unit provided with a contact surface which is to be brought into contact with the preform at least partially,
- a fluid introduction means configured for introducing a pressurized fluid into the tubular area, and
- a limiting device for limiting the radial expansion of the tubular area upon introduction of the fluid.
Dependencies are inferred from the claim text.